<<Disclaimer: Verify this information before applying it to your situation.>> Thanks to all. The suggestions were these (1) Get a stainless steel thermos, not plastic. (2) Try www.thermos.com (3) Target has them. Try the camping good section (AHA! Silly me, looking in the housewares and dishes section!) (4) Wal-Mart has them (I refuse to shop there because they sell handgun ammunition, but that's a whole other issue!) :-) Some people suggested I work with the school to arrange GF hot lunches for her. That might be a good idea in some place, but I've seen the hot lunches at our school and all I can say is YUCK! (Some of her teachers have asked me if I would start packing lunches for them, too.) Thanks again!